2 // Copyright 2019 AT&T Intellectual Property
3 // Copyright 2019 Nokia
5 // Licensed under the Apache License, Version 2.0 (the "License");
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
9 // http://www.apache.org/licenses/LICENSE-2.0
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
20 type IController interface {
31 "rsm/providers/httpmsghandlerprovider"
40 type IController interface {
43 type Controller struct {
45 handlerProvider *httpmsghandlerprovider.RequestHandlerProvider
48 func NewController(logger *logger.Logger, handlerProvider *httpmsghandlerprovider.RequestHandlerProvider) *Controller {
51 handlerProvider: handlerProvider,
55 func (c *Controller) extractJsonBody(r *http.Request, request models.Request, writer http.ResponseWriter) bool {
57 body, err := ioutil.ReadAll(io.LimitReader(r.Body, LimitRequest))
60 c.logger.Errorf("[Client -> RSM] #Controller.extractJsonBody - unable to extract json body - error: %s", err)
61 c.handleErrorResponse(rsmerrors.NewInvalidJsonError(), writer)
65 err = json.Unmarshal(body, &request)
67 c.logger.Errorf("[Client -> RSM] #Controller.extractJsonBody - unable to extract json body - error: %s", err)
68 c.handleErrorResponse(rsmerrors.NewInvalidJsonError(), writer)
75 func (c *Controller) handleRequest(writer http.ResponseWriter, header *http.Header, requestName httpmsghandlerprovider.IncomingRequest, request models.Request, validateHeader bool) {
79 err := c.validateRequestHeader(header)
81 c.handleErrorResponse(err, writer)
86 handler, err := c.handlerProvider.GetHandler(requestName)
89 c.handleErrorResponse(err, writer)
93 response, err := (*handler).Handle(request)
96 c.handleErrorResponse(err, writer)
101 writer.WriteHeader(http.StatusNoContent)
102 c.logger.Infof("[RSM -> Client] #Controller.handleRequest - status response: %v", http.StatusNoContent)
106 result, err := response.Marshal()
109 c.handleErrorResponse(err, writer)
113 c.logger.Infof("[RSM -> Client] #Controller.handleRequest - response: %s", result)
114 writer.Header().Set("Content-Type", "application/json")
115 writer.Write([]byte(result))
118 func (c *Controller) validateRequestHeader(header *http.Header) error {
120 if header.Get("Content-Type") != "application/json" {
121 c.logger.Errorf("#Controller.validateRequestHeader - validation failure, incorrect content type")
123 return rsmerrors.NewHeaderValidationError()
128 func (c *Controller) handleErrorResponse(err error, writer http.ResponseWriter) {
130 var errorResponseDetails models.ErrorResponse
135 case *rsmerrors.RnibDbError:
136 e2Error, _ := err.(*rsmerrors.RnibDbError)
137 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
138 httpError = http.StatusInternalServerError
139 case *rsmerrors.HeaderValidationError:
140 e2Error, _ := err.(*rsmerrors.HeaderValidationError)
141 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
142 httpError = http.StatusUnsupportedMediaType
143 case *rsmerrors.WrongStateError:
144 e2Error, _ := err.(*rsmerrors.WrongStateError)
145 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
146 httpError = http.StatusBadRequest
147 case *rsmerrors.RequestValidationError:
148 e2Error, _ := err.(*rsmerrors.RequestValidationError)
149 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
150 httpError = http.StatusBadRequest
151 case *rsmerrors.InvalidJsonError:
152 e2Error, _ := err.(*rsmerrors.InvalidJsonError)
153 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
154 httpError = http.StatusBadRequest
155 case *rsmerrors.RmrError:
156 e2Error, _ := err.(*rsmerrors.RmrError)
157 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
158 httpError = http.StatusInternalServerError
159 case *rsmerrors.ResourceNotFoundError:
160 e2Error, _ := err.(*rsmerrors.ResourceNotFoundError)
161 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
162 httpError = http.StatusNotFound
165 e2Error := rsmerrors.NewInternalError()
166 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
167 httpError = http.StatusInternalServerError
170 errorResponse, _ := json.Marshal(errorResponseDetails)
172 c.logger.Errorf("[RSM -> Client] #Controller.handleErrorResponse - http status: %d, error response: %+v", httpError, errorResponseDetails)
174 writer.Header().Set("Content-Type", "application/json")
175 writer.WriteHeader(httpError)
176 _, err = writer.Write(errorResponse)
179 c.logger.Errorf("#Controller.handleErrorResponse - Cannot send response. writer:%v", writer)
183 func (c *Controller) prettifyRequest(request *http.Request) string {
184 dump, _ := httputil.DumpRequest(request, true)
185 requestPrettyPrint := strings.Replace(string(dump), "\r\n", " ", -1)
186 return strings.Replace(requestPrettyPrint, "\n", "", -1)